Film-feeding mechanism.



F. E. ARTZ.

F ILM FEEDING MECHANISM.

APPLICATION FILED MAR. 12, I914.

Patented Feb. 1, 1916. J

7/ imlimelll 4 It t FRANK n. enrz, or c'nIcAeo, IL'LINoIs.

FILM-FEEDING MECHANISM.

-.l[llinois, have invented certain new and useful Improvements inFilm-Feeding Mechanism, of which the following is a specification.

My invention relates to improvements in means for intermittently feedingthe film of photo projecting machines and the especial object of myimprovements-is to provide simple and inexpensive means which willaccurately register with the film marginal apertures under the highspeed at which such mechanism moves, and which will be free fromvibration.

A further object of my improvements is ,to provide film feeding elementsin which lost motion due to wear will be negligible, and in which anyworn parts may be easily removed and replaced.

A still further object of my improvements is to provide .a filmactuating mechanism that will enter and leave the apertures in the "filmat substantially right angles to the plane of the film in its passageover the exposure opening, thereby avoiding danger of tearing the "filmor wearing the edges of the apertures.

Other objects of utility and convenience of operation are conserved bymy invention as will be apparent to those skilled in the art.

ll haveillustrated, and will describe in detail, my improved filmactuating mechanism, in a preferred form.

In the accompanying drawings :Figure 1 shows in rear elevation, myinvention, and so much of the accompanying parts,- as is necessary todisclose its operative connection; Fig. 2 is a view partly in elevationand partly in section, showing the film actuating elements in oneoperative position, i. e.,

cleared from the film; Fig. 3 is a view corresponding to Fig. 2, showingthe parts in a different position, 2. e., engaging the film; Fig. 4 is adetail in plan of the pivoted lever which engages the film... V

Referring to the' details of the drawing, and the reference numeralsthereon, 5 represents the ,plate or base which carries the operatingelements of a photo projecting machine of well known construction.- Inthis plate are the exposure opening 5*, and the slots 5 the latterreceiving the teeth of Speeification of Letters Patent. I

Patented Feb. 1, rate.

Application filed March 12, 191 1, Serial No. 824,079.

the lever which actuates the film, as will disk 10. To the disk 10 isattached by a screw-pivotll a link 11, the upper end of which is slit orbifurcated to receive the lower end of a lever 12, a pin 11 serving toconnect the link. and lever at this point. The lever 12 is formed at itsupper end with an angular extension 12 which terminates in prongs orteeth 12. The lever 12 pivotally mounted on a pin 13, which is fixed inlugs 14: projecting from a plate 14, and below the pivot, the end of thelever is formed with a squared shoulder 12. The plate 14:- is providedwith cylindrical extensions or knuckles 1 1", along one of itsvertical-edges, and at its opposite edge with a semi-cylindrical lug 14.The parts 14", 14, slidably engage parallel posts 15, 15, the ends ofwhich are fixed in brackets 16, secured to the plate 5 by screws 16.

To therear side, and at the up er edge of the plate 14, is secured ayoke 1 which rojects at right angles from said plate.

ithin the yoke are fixed blocks 18, which are spaced apart to provide aguide and slideway for the lever 12, which reciprocates in said yoke. Astud 19, is arranged with its outer end projecting through a suitablehole in the yoke 17, and with its inner end formed with a flange 19 ,anda conical point, the latter fitting loosely in a corresponding'recess inthe lever, as indicated'by dotted lines. Surrounding the stud 19, withits ends bearing against the yoke and the flange 19 respectively, is anexpansion coil-spring 20.

In a mechanism constructed as described, upon motion being imparted tothe disk 10, through the instrumentalities described, or any suitablesubstitutes, it will be obvious that when the link 11 and lever 12 arein the relative positions shown in Fig- 2, in

These positions are taken during the outward stroke of the lever, sothat it is entirely cleared of the film until the instant of the inneror return stroke, when the lev'er begins to rock upon its roundedportion adjacent the pivot 11", as shown in Fig. 3. When, the travel ofthe disk 10 moves the link 11 to a position in which the co-actingsquared faces of the lever and link begin to separate, the expansiveforce of the spring 20, applies to force the upper end of the leverforwardly or to its film engaging position shown in Fig. 3.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a cinematograph, a film guideway 'through which the film isadapted to pass,

a reciprocable plate movable substantially parallel to said guideway, amember pivoted to said plate, film engaging means extending laterallyfrom said member toward said guideway, a pitman pivotally connected tosaid member, and means for actuating said pitman.

2. Ina cinematograph, a film guideway through which the film is adaptedto pass, a reciprocable plate movable substantially parallel to saidguideway, a member pivoted to said plate, film engaging means extendinglaterally from said member toward said guideway, a pitman, a butt-jointconnection between said pitman and said memthe path of said pitman, alever pivoted to said plate, a butt joint connection between said leverand said pitman, laterally extend= ingmembers upon the opposite end ofsaid lever, and means yieldingly actuating the last-mentioned end ofsaid lever toward said film guideway.

4. In a cinematograph, a film guideway through which the film is adaptedto pass, a reciprocable platc.movable substantially parallel to saidfilm, a pick pivotally mounted on said plate and adapted to enter saidguideway, and means for actuating said pick, said means including atwo-piece link pivotally connected by a butt-joint.

In testimony whereof I afiix my signature in the presence of twowitnesses.

FRANK E. ARTZ.

Witnesses:

EDWIN K. LUNDY, M. A. MILORD.

